Description of elements in the header
m_ssamount of monthly sunshine duration
m_sxthe maximum sunshine duration in the month
m_sxdthe day with the maximum sunshine duration
m_dsf20number of days when the sunshine duration is less than 20 % of the astronomic sunshine duration
m_dsf80number of days when the sunshine duration is more than 80 % of the astronomic sunshine duration
1978.m_ssm_sxm_sxdm_dsf20m_dsf80
January54.47.41978-01-01191
February57.69.31978-02-21181
March161.511.31978-03-3095
April150.611.91978-04-07113
May158.713.31978-05-10121
June248.614.91978-06-1954
July265.213.41978-07-0456
August256.811.91978-08-0126
September191.411.41978-09-0966
October177.09.41978-10-0736
November22.15.81978-11-30250
December37.07.41978-12-05211